Hot ingredient provided in cold water (6,6)

I believe the answer is:

chilli flakes

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'hot ingredient provided in cold water' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'hot ingredient provided in cold water' is the wordplay.
'hot ingredient' becomes 'if' (I can't explain this - if you can you should believe this answer much more).
'provided in' indicates putting letters inside.
'cold' becomes 'chill' (chill can mean cold).
'water' becomes 'lakes' (bodies of water).
'chill'+'lakes'='chilllakes'
'if' inserted into 'chilllakes' is 'CHILLI FLAKES'.

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I've seen this clue in The Guardian.

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